Fry the onions in olive oil (about 2-3 tablespoons), and add compressed garlic. When the onion is ready, add the rice and roast it for about 2-4 minutes. The rice will be ready when the oil surrounding it shines, and the grains will turn whiter.
Then add the wine. As the wine grows into the rice, we start to add the broth. I add one tablespoon of vegetable broth to the spinach as the spinach flushes the juice and gets into the rice. We start adding the broth (my broth is a half spoonful portion)
As soon as the broth is in the rice, add the butter and stir. I always put the risotto aside, covered for about 10 minutes.
After 10 minutes, add the mascarpone cheese and mix.